Electric griddle



K. EHRGOTT ELECTRIC GRIDDLE Original Filed Sept. 12, 1925 2 Sheets-Sheet l Jan. 24, 1928.

IN V EN TOR. mag /fir Jan. 24, 1928.

- ',6 57,204 K. EHRGOTT ELECTRIC GRIDDLE original Filed pt. 12. 1925 2 Sheets-Sheet 2 w 14 TTORNEY.

Patented Jan. 24, 1928 UNITED STATES PATENT OFFICE.

KARL EHBGOTT, F ERIE, PENNSYLVANIA, ASSIGNOR TO BERNARD GLOEKLER COM- PANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

. @ECZRIG GRIDDLE.

Application filed September 12, 1925, Serial No. 56,046. Renewed September 27, 1927.

More particularly my invention comprises improvements in the griddle top and the mounting of the heating elements thereln, and also to the structure of the base and the mounting of the insulating element therein.

In the accompanying drawings, wherein I have illustrated the best embodiment of the principles of my invention now known to me, Fig. 1 is a front elevation of the electric griddle, broken away in partial section along the line II in Fig. 2 to show parts; Fig. 2 is a bottom plan view of the griddle top on reduced scale; Fig. 3 is an end view of the electric griddle looking from the left in Fig.

1, the same being broken away in partlal section along the line III-III in Fig. 2; Fig. 4: is a. detail in section showing the means for securing the ends of the heating elements; Fig. 5 is an enlarged detail in :0 section along the line VV in Fig. 2; Flg.

6 is a broken plan view of theinsulatlng element and its pan, and Fig. 7 is a perspective of the locking member which connects to gether the bottom parts.

Referring in detail to thedraw1ngs,A represents the griddle top which 1s supported by. the inclosed base B, the base being supported at proper elevation by the feet C. represents the heating elements mounted in the top. E represents the insulating member, usually a mat of suitable material, such as asbestos felt, and which is contained in a pan F mounted in the base B.

The construction of the top, as shown, is as 5 follows.

'1 represents the top plate whose polished upper surface forms the cooking surface. This plate maybe of steel, cast iron or other suitable metal. I

0 To the under surface of the plate 1 are attached the two transversely disposed end bars 2 and the center bar 3. The bars 2 are set sufficiently in from the end of the plate 1 and the bars 2 and 3 are short enough to allow the plate 1 to rest'on the top of the base B with the bars 2 and 3 within the base, and the bars 2 are spaced inwardly frorrnthe ends of the plate 1 forv the same purpose.

The bars 2 and 3 are secured to the under side of the plate 1 by means of bolts 4:. I have shown nine of said bolts employed, one at each end of the bars and one attheir centers. The bolt heads are countersunk below the top surface of the plate 1 and the depression over the bolt head being filled level with the top of the surface with added metal by welding, as indicated at 5, and the weld being then ground and polished to produce a smooth surface uniform with the remainder of the plate. a

6 represents the front and rear bars of the structure, being angle-bars with their vertical flanges turned downwardly and their horizontal flanges turned inwardly. The bars 6 are stepped inwardly from the edge of the plate 1 so as to be within the .base B when the griddle is in place, the griddle being supported by the plate .1 which rests on the top of the base B and extends horizontally outside of the latter.

The bars 6 are held in place against the under side of the bars 2 and 3 by means of the end bolts 4 which extend through the bars 6, nuts 7 being screwed on said bolts up against the bars 6.

Between the bars 2 and 3, the horizontal flanges of the bars 6 are thickened upward- 1y, as by welding the metal strips 8 thereon, upon which thickened portions rest the ends of the heating elements or heaters D or the blanks D which may be substituted for certain of the heating elements when the degree of heat to be employed is less than that furnished by a full set of heating elements. The end portions ofsaid heaters are reduced in thickness from below, and there is a slight clearance or looseness of fit so that expansion is allowed for The shoulders 9 on the underside of the heaters clear the bars 6 sufficiently to permit longitudinal expansion without binding and they also prevent cu!!- tact between the electric terminals 10 of the heating elements and adjacent portions of the griddle structure should the heaters be misplaced relative thereto.

11 is a pressure plate which is attached to the bars 2 and 3 and bears upwardly on the heaters, thus insuring good terminal contact between the heaters and the top plate.

The plate 11 is sutficiently narrow to avoid contact with the terminals 10.

The three bolts 4". which extend through the centers of the bars 2 and 3 also extend through the plate 11 and the nuts 7 are screwed up against said plate.

12 represents bolts which secure the corners of the plate 11 to the bars 2 said bolts having their heads countersunk into the upper surfaces of the bars 2 to enable the top platelrtolfitflat on therbars and nuts 13 beingscreavedfup onsaid bolts 12 against the plate 11. i

- The plate 11 provides a thermal path to disseminate heatfrom the lowersides of-the heaters D a-nd'the b'a-rs 2 a-nd-3; a-nd frein the blanks or spacers D which may be Substituted for some of the heaters D.

When innse the top griddleis mounted onv the top ofthe Walls of the base in the man-' ner shownjn Figs: lifilld 5, thei top plate: 1 supportingthetop griddle in pl-aee. f

When inspection tr, repairs are; necessary, the. top griddle; may be turned up, on its rear edge whereupon .its parts are-fully. exposed, and after the pressure plate lleandonei of the angIeTba-rs Behave beenremoyed, one. or moreof the. heating: elements mayvbe lifted out-mand new. ones insertedv very quickly by an unskilled person, without requiring any" tools but awrench and/screw driver 10i-vr e moving the IlIllISrsZlIld? terminal screws 1 The base Bis-an open toppedboxiorined of sheetmetal, and 'lpreterahlyl rowided with an interlining of heat insulating; material, and'having its bottom edges:rolldinwardly and upwardly, as at .14; around a stiffiening Wire or'rodi15p The insulator pan Ff is 5 formed .of :sheet' metal, closedat the. bottom and op en at its,

top. It is supported in'positionjin the base v B by means of; vertical I supports or legslfi" which 7 are angular; in ierossjsectien t and; fit

on, the corner of the pan and are. spot welded orotherwi's'e, attached theretoi; The lower; ends of the supports 161rest onth'esbottonr I rolll L,

17 and .18jare tWo. spaced "apart .sheetinetal 1 channel members set{ on. edge. and turned] toward each other. with, their, lowerflanges: spot welded to the floorgofith'e-ipan E long '-T tudinally thereof and 'spaced'inwardly from, hefrentlandjrear, walls. otfthfe pan... The

insulating memb er E, which is preferably e. a mat; of asbestos felt or similar, material is. fitted and contained, between i said channel memberslj and 118.1 7

To enable the mat, to. beconyeniently] plaeedjin position, the top flangejofone of said members, as at 18; is cutaway at spaced 5' intervals to leave tongues-19 whlieh'imayybe bentaup to permit-the mat to bei'nserted'iin 7 place and then bent back into aQhorizomtal,

position to hold it in places "The conductors 20"Whieh supply theeurrent to the- -h'eating elements G' are l'eld'up through insulated .h 'oles 21in the floor of the pan F at the rear oftthe channel 1ne1nber18" and" attached to the proper terminals" '10. Theother ends of the conductors are eonnected'to the switches 22' in the lower portion of the base Whose pointerknobs23 are on the front ofthe base. Snfli'eient'slaekis, provided in nth-e conductors 20 to permit the edge. 24c ,represents the leads which supply current: to the switches.-

The feet Care preferably of cast metal and'liave their upper portions formed to fit in the angles of tliebase B raround 'the roll- 14 and in =the angles of the lower portions of the supports 16. 25 represent bolts which extendtlrrough the legs C, the supports 16 andthawall 0f the base Bto ela1np. the supports and legs in place. f' I p The. bottom of: the vbase. B 1 is, removable and; is --comprised of i tworme'tal sheets 26. of. proper size to fit. Within, the base and". be supported, by: the roll' 14;. The adjacent. ges offsaid '1 sheets, are upset downwardly to form. t the hooked; flanges. 27, and 2.8 is, a sheet metal locking, member-Which is forced. into.,.said flanges, thus pressing theflsheets. apart and looking them in. place to; form, the. bottom. The-fends-ofthe flanges are, out off-g atone side otthe-sheets and'th'e, member! 28 lSI of f slightly less lengthg'than the widthofjthebottom sheetsso that it-may beinsertedjafterlthe sheets 26: are-in position, f thus .Wedgingthe jsheets into place and lock ingthei-radjaeent edges together. One end of themember 28 is flanged downwardly asat 29, to form a handle bywhioh the member may be gripped 'for its insertion or removal.

lVhatJIdesire. to claim is esv I 1'. In an eleetric vgriddle, the combination. ofa top sheet, a.';p air,- of "bars attaoh'edfto the underside of said' top sheetf andzin spaced relation thereto, heating elements supported in place heneathsaid' top sheetmm by haying-their; ends resting: on said-""b'ars andff'a second sheet mounted beneath said? I heating-elements and 'suppprting the intermediate portions ofthe same from below:

2'. In anelectrie griddldthe combination; of a topgsheet, a plurality; ofparall'el bars in spaced relation andsecured tothe underside ofsaid 'top sheet; a pair of*b ars disposedatf rightangles to saidljfirstinamectbars andat-*' ta'ehed' thereto, and electric heating elements 410 elements having their ends supportedf on 129,

said second namedhars and"bein-g covered by saidtop sheet,"and supportingimeans at taeh'ed' to. the first named bars and engaging; the intermediate portions of'the-heating ele nients from below. 1 1 i 4"."In an eleetrio griddle; thencoln-bination. of'a top-sheet; a-gpluralityof p arallelbars-r in spaeedf relation and? secured" to the un p derside of said top sheet,' a zpair offbars'd is griddle top to be tilted up on its-rear P e right" angles to said 1 first named 5 bars and attached thereto, electric heating elements having their ends supported on said second named bars and being covered by said top sheet, and a pressure sheet attached to said first named, bars and supporting said heating elements from below.

5. In an electric griddle, the combination of a top sheet, a plurality of parallel bars in spaced relation secured to the under side of said sheet, a pair of bars disposed in angular relation to said first named bars and attached at the ends of the latter, heating elements positioned beneath the top sheet by having their ends supported by said second named bars, and a second sheet supporting the intermediate portions of said heating elements from below.

6. In an electric griddle, the combination of a top sheet, a plurality of parallel bars in spaced relation secured to the under side of said sheet, a pair of'bars disposed in angular relation to said first named bars and attached at the ends of the latter, heating elements positioned beneath the top sheet by having their ends supported by said second named bars, and a second sheet supporting the intermediate portions of said heating elements from below and attached to said first named bars.

7 In an electric griddle, the combination of a top sheet, a plurality of bars spaced apart in parallel relation and attached to the under surface of the top sheet, a pair of angle irons having their vertical flanges turned downwardly and their horizontal flanges turned inwardly attached at the ends of said first named bars, and electric heat ing elements positioned beneath the top plate by having their ends supported by said angle-bars, the horizontal flanges of said angle-bars being thickened upwardly between said first mentioned bars to position said heating elements in juxtaposition to said top plate.

8. A base for an electric griddle comprising a box formed of sheet metal having its lower edges rolled inwardly to strengthen the box, and a bottom for said box comprised of a pair of metal sheets resting on said roll and means for forcing said sheets apart to wedge them in place.

9. A base for an electric griddle comprising a box formed of sheet metal having its lower edges rolled inwardly to strengthen the box, and a bottom for said box comprised of a pair of metal sheets resting on said roll, the adjacent edges of said sheets being provided with opposed hooked flanges, and a locking member adapted to be forced inwardly into engagement with said flanges to wedge said sheets in position.

Signed at Pittsburgh, Pa, this 3rd day of Sept, 1925.

KARL EHRGOTT. 

